I also started pulling out my hair when I was 12, I'm 43 now. It's not nearly as bad as it used to be. When I first started, I'd concentrated on a spot at the top of my head and eventually ended up with an obvious bald spot there. These days, I focuse more on the little whispy hairs around my hairline, eyebrows and eyelashes, although not to nearly the degree as it used to. I actually have eyebrows now, which is really saying something! I've had other OCD rituals, but don't want to go into them here. Oddly enough, I'm more ashamed of them than of the trich.
When I was in my teens, I stumbled upon a do-it-yourself form of CBT. Sorting beads gave me the same kind of satisfaction as the trich. That then became my new obsession. I'd take a large jar of seed beads, sort them by color and size, and then mix them all up again. Lather, rinse, repeat. I've also found similar satisfaction in peeling wallpaper or paint. I've never stopped picking completely, but it seems to help cut down on the self-damage.
I seem to pick more when I'm anxious, watching tv, and sometimes even driving (although that could be the anxiety). The only time there's a real urge to pick is when I'm very anxious, otherwise it's usually a mindless activity. Never been on meds for anxiety, but drs have tried me on stuff for depression before. The side effects were worse than the original problem so I stopped taking the meds.
Have you considered maybe having something in your hand to "play" with while you read? This could be a string of beads, a keychain, a pretty rock, something to occupy your picking hand. I've found this is helpful, as I only pick with my right hand.
Please keep us posted.